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rut955 rut240 rut950 rutx11 rms vpn to openvpn wifi not sms trb140 firmware connection - ipsec on rutx12 rutx09 modbus
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RUT240 LAN-port dies with modbus TCP in use?

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by

Hi,

I have a strange problem with RUT240, LAN port "dies". I have embedded Linux device on LAN1 + Modbus TCP activated. Let's call the device "Linux".

Testing with Ethernet cable:

  • RUT240 - Linux = LAN down, no RJ45 connector lights on either device
  • RUT240 - another computer = LAN up and working
  • Linux - another router = LAN up and working

When I disable Modbus TCP from RUT240 = LAN works normally after 30 seconds. After activating the Modbus TCP again, it works like 30-60 minutes normally and then dies.

I have tested two firmwares, no difference. Full system restore, no difference. 

  • RUT2XX_R_00.01.12.3_WEBUI
  • RUT2XX_T_F1541_00.01.12.15_WEBUI
Br, Simo

1 Answer

0 votes
by anonymous
Hi,

Could you send me your troubleshoot file via private message?

EB.